Distance, displacement, speed and velocity Flashcards
1
Q
Displacement
A
Is a distance travelled in a certain direction.
2
Q
Distance
A
How far an object has moved. It is scalar quantity, so it does not involve direction.
3
Q
Speed
A
How fast is the object moving.
4
Q
Velocity
A
Is a speed in a given direction.
5
Q
Acceleration
A
Is the change in velocity in a certain amount of time. (m/s2)
6
Q
Deceleration
A
Change of velocity per second when an object slows down.
7
Q
Uniform acceleration
A
Constant acceleration
8
Q
Acceleration equation
A
a = Δv(change in velocity) / t (time)
9
Q
The acceleration of an object can be calculated from…
A
the gradient of the velocity-time graph.
10
Q
The acceleration of an object is:
A
- proportional to the resultant force on the object
- inversely proportional to the mass of the object
11
Q
Formula for acceleration
A
m/s2 = change in velocity(m/s) / time taken for change (s)
